Antenna



FIG. 1 is a top plan view of an antenna with a base in broken lines.

FIG. 2 is a side elevation view of the antenna of FIG. 1.

FIG. 3 is a side elevation view of the antenna of FIG. 1.

FIG. 4 is a front elevation view of the antenna of FIG. 1.

FIG. 5 is a rear elevation view of the antenna of FIG. 1.

FIG. 6 is a top perspective view of the antenna of FIG. 1; and,

FIG. 7 is a top perspective view of the antenna of FIG. 1.

The broken-line showing of a base is environment that forms no part of the claimed design. 

CLAIM The ornamental design for an antenna, as shown and described. 